Better filter for real network interfaces

[mageddo]

What is expected

Java haven't an identifier to separate real network interfaces from the virtual ones, because of this DPS can't securely choose the real network interfaces to use that as the IP to set as default DNS which would be the best options..

I've done some researches and maybe I can use 'isSiteLocalAddress' method to identify that,

A unicast address uniquely identifies a single interface by its address. An interface can have multiple unicast addresses and must have at least one link-local address. A link-local address is an address used on a link between two nodes. [1]

This method won't work for ipv6 as it uses an implementation based on a deprecated rfc, will need to implement my own isSiteLocalAddress for ipv6

What is Happening

What is the actual behavior and lacks without this feature and what's the fallback while this feature is not implemented yet

Changes (Optional)